Improved marine propelling apparatus



i tubular wing-cylinder and its wing.

IUNiTED STATES PATENTv OFFICE.

ETHAN CAMPBELL, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO IVM. P. PAGE ANDEDVARD F. HODGES.

IMPROVED MARINE PROPELLING APPARATUS.

Specification forming part of Letters Patent No. 18,314, dated September29, 185'?.

T0 all whom it may concern:

. Be it known thatI, ETHAN CAMPBELL, of Boston, in the county of Suffolkand State of Massachusetts, have invented an Improved Apparatus forPropclling Navigable Vessels; and I do hereby declare that the same isfully described and represented in the following specification and theaccompanying drawings, of which- Figure l denotes a vertical andtransverse section of the said apparatus; Fig. 2, a vertical andlongitudinal section of it; Fig. 3, an inner elevation of one of the.eccentric heads, which are affixed to the shaft, to be hereinafterdescribed. Fig. 4t is an end view of the Fig. 5 is a side elevation ofthe wing-cylinder and its wing as they appear when applied to the shaftand its eccentric heads. Fig. 6 is an end View of the propeller-case,and shows the positions of inclined steam-engines when applied for thepurpose of operating the shaft. Fig. 7 denotes an elevation of twopropeller-cases, their shafts, and connecting bell-crank, they when inuse being arranged athwartships of a vessel and so as to open out of herhold and on opposite sides of the keelson thereof.

In such drawings, A represents a cylindrical case or vessel providedwith two curved induction pipes or passages B and C, leading out of itslower part and arranged with respect t0 one another and the case, asshown in Fig. 1. Through the axis of the said cylindrical case a shaft Dextends and turns freely in the ends of the case. The said shaft has twocircular heads E E affixed upon it eccentrically, as shown in Figs. land 2, each of said heads being placed, as shown in Fig. 2, in contact,or nearly so, with the adjacent head a of the case A. A tubular wingedcylinder F turns freely on the two heads E E, it being arranged thereonas exhibited in Figs. l and 2. This cylinder has a wing 0r rectangulardivision-plate G extended downward from it and directly between the twopassages B and C, such wing being constructed in its length tocorrespond to the distance between the heads a a of the case A. Thiswing G is firmly attached to the cylinder F, and when the apparatus isin operation plays freely through a space ZJ, arranged between theconducting-passages B and C, as shown in Fig. l, the sides of such spaceb being so formed as to be in contact with those of the wing G inwhatever position such wing may be. Vhen the shaft D is put inrevolution, it will cause the two eccentric heads E E to revolve with itaround and within the ease A, such a movement of the heads Operating inconnection with the space b, and the wing G serving to create in thetubular cylinder F a peculiar movement within the said case, by whichsuch cylinder F willbe carried around against the entire inner surfaceof the case.

In constructing the apparatus the cylinder F should have such a diameteras will cause its outer surface while being moved with and by theeccentric heads to always touch or nearly touch the inner surface of thecase in a line parallel to the axis of the latter. This is an importantmatter of construction, as on it the correct operation of the apparatusdepends.

If we suppose the mechanism above described to be arranged in the holdof a ship or vessel, and so that the two passages B and C shall openthrough the bottom thereof in such manner that the water in which suchvessel may float may enter the lower ends of them while they arearranged longitudinally in the vessel, and we put the shaft D inrevolution by a steam-engine or other proper means, the action of theapparatus will be such as to cause water to be drawn through one of thepassages B C and into the case A, and finally expelled therefrom throughthe other of said passages. The propulsion of the ejected iiuid againstthe water surrounding the vessel will cause said vessel to be moved orpropelled along through the said water.

In Fig. l, oc y e' show three positions of the tubular Wing-cylinder Fand its wing G during one entire revolution of the shaft D, the saidpositions being indicated by dotted lines.

From the above it will be seen that by permanently attaching the wing Gtoits cylinder F, so vthat one shall be immovable relatively to theother, the said wing has vibratory as well as up-and-down movementsimparted to it while the cylinder F is moved within its case. Thisarrangement or application of the parts, in connection with the peculiarmanner of Working` the case-viz., With an oritice b, formed so as notonly to admit of the said vibratory movements of the Wing, but so as tobe in contact with its opposite sidesdispenses with the necessity ofjointing or hinging,r the Wing` t0 its cylinder F, and thus avoids thedanger of leakage at and breakage of such joint. In several otherrespects advantages come from the above application of the parts.

Now I do not claim an eccentric cylinder and a Wing or valve arranged soas t0 rotate together in a cylindrical case, the Wing during suchrotation being made to slide in a recess formed in the eccentriccylinder, nor do I claim the principle of propelling a vessel by anapparatus for forcing jets of Water against the water in which thevessel may be floating.

Vhat I claim is- My improved propelling' apparatus, constructed andoperating so that its wing-cylinder F and wing-plate G may not onlysimultaneously rise and fall in their case A, but at the same time havelateral motions in contrary directions, and the Wing operate against aspace h, so formed in and applied to the case as not only to be incontact, or nearly s0, with the opposite sides of the wing, but allowthe Vibratory as WellY as the lip-and-down movements of the Wing, asspecified.

In testimony whereof I have hereunto set my signature this 11th day ofOctober, A. D. 1856.

ETHAN CAMPBELL.

Vitnesses:

R. H. EDDY, WM. P. PAGE.

